Biology; Chemistry; Physics: Post your doubts here!

[Mayedah]

1 kg water in a 500g glass beaker is at room temperature ie; 25degreeC. what should be the mass of water at 65degreeC, which is added to beaker to bring its temperature to 40degreeC (c for beaker = 5615J/kg K-1 , c for water = 4200 J/kg K-1 ) ???

Which past year question plz !

 

[convent2012]

60*C ?

by charles law ???

 

[Haseefa]

IS THERE ANY MNEMONIC OF LEARNING ELECTROMAGNETIC SPECTRUM

it is just fleeing over mind !!

Red Mug Is a Very Useful X-mas Gift

Radio, Micro, Infrared, Visible Light, UV, X rays, Gamma rays

yeah its kin o creepy buh still helpful
RABITS MATE IN VERY UNUSAUALLY EXPENSIVE GARDENS

radio_micrwaves_infrared_ultraviolet_X ray_gamma

What about Visible Light, or Light?

 

[snowbrood]

why do current flow through all branches in parallel circuit?? why isnt there a short circuit?

 

[convent2012]

Which past year question plz !

not from past paper my teacher gave it

 

[ashiqbal]

Because of one spring gives 2x thn two springs would give 4x because we add up values in series !

you were correct there! i found out in a book where it is said that for the same load, the extension doubles if we double the length of wire! so there! 2x for one spring, therefore 4x for two springs

 

[Mayedah]

you were correct there! i found out in a book where it is said that for the same load, the extension doubles if we double the length of wire! so there! 2x for one spring, therefore 4x for two springs

Oh nyc

 

[snoonono]

guys need some1 to explain for me thermal capacity, latent heat of fusion and the other type, and specific heat capacity, PLZ HELP!!!!!!!!!!!

 

[convent2012]

explain plz ..

anyone ???

 

[convent2012]

1 kg water in a 500g glass beaker is at room temperature ie; 25degreeC. what should be the mass of water at 65degreeC, which is added to beaker to bring its temperature to 40degreeC (c for beaker = 5615J/kg K-1 , c for water = 4200 J/kg K-1 ) ???

anyone ?

 

[convent2012]

how temp varies from 30degreeC, if the gas is compressed from 50cm^3 to 25 cm^3 ????

answer it !

 

[Mayedah]

anyone ?

Its a little difficult too confusing

 

[Mayedah]

answer it !

15 ???

 

[convent2012]

what will be volume of a gas if pressure on it is released from 22mm-Hg to 12 mm-Hg ????

lastly this one also plz !!

 

[convent2012]

15 ???

how ??

 

[Mayedah]

lastly this one also plz !!

Can u tell me the correct answer to the one before !

 

[snoonono]

guys the question says draw in the approximate positions of the reflected and the refracted ray, can some1 draw a sketch to show me how to do it?

 

[convent2012]

Can u tell me the correct answer to the one before !

i donot have answer

 

[asd]

anyone ?

2*10^6, correcT?

 

[convent2012]

2*10^6, correcT?

how ??